Treatment of Kaposi's sarcoma in acquired immunodeficiency syndrome with an alternating vincristine-vinblastine regimen.

Twenty-four patients with acquired immunodeficiency syndrome and Kaposi's sarcoma (KS) were treated with a regimen alternating vincristine with vinblastine on a weekly basis. Objective responses to this regimen were observed in nine patients (45%), and seven (35%) had stabilization of progressive KS. Few toxic effects were observed. Alternating vincristine-vinblastine therapy is well-tolerated and effective palliative treatment for KS in acquired immunodeficiency syndrome.